Process for the production of grafted polyethylene and grafted polyethylene
US12286497B2 · kind B2 · utility
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2References
20Claims
0Family size
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Key dates
| Filing date | Mar 2, 2023 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Mar 2, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Process of grafting of a polyethylene-containing material to produce a modified polyethylene composition comprising providing a twin screw extruder with one or more thermal regulation devices; a polyethylene-containing material and a grafting agent and extruding the polyethylene-containing material and the grafting agent to obtain a modified polyethylene composition; the step of extruding comprises a thermal treatment of the polyethylene-containing material by self-heating of the material at a maximum barrel temperature Ts ranging from 315° C. to 410° C. in one or more hot zones of the extruder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.